Septimian dynasty

The Septimian dynasty was a family that ruled over the Eastern Roman Empire from 429 AD.

History
The House of Septimii was an esteemed Roman family, and one of their scions, Marcellus Septimius, married Flavian dynasty princess Leontia in 414 AD. Marcellus became the faction heir of the Eastern Roman Empire and he became Emperor in 429 AD, founding a new dynasty.

Under his rule, the Roman Empire was Christianized, with Papal Primacy and the Council of Chalcedon being achieved under his rule. Also, he fought against the Alemanni and Sarmatians, who invaded his empire from two sides.